Fire hose nozzle



Nov. 16, 1943. H. L. DOWELL ETAL FIRE HOSE NOZZLE Filed Feb. 26, 1943 3 Sheets-Sheet 1 INVENTORS E Dowel] 0126 07:99 1.15 119% A r TOR/V5 7 H. L. DOWELL' ET AL Nov. 16, 1-943,

FIRE HOSE} NOZZLE Filed Feb. 26, 1943 3 Sheets-Sheet 2 INVENTORS L 00 well and G/zan,

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lie 0 w {Will/IA IIIIII H. L. DOWELL El'AL 2,334,395

Nov. 16, 1943.

FIRE HOSE NOZZLE Filed Feb. '26, 1943 Sheets-Sheet 3 2 7 i 1 km. \m a i we n N W M 1m r 0k I w 3 a 1 5 ra 7 2mm 3 m 1 W 87 6 Patented Nov. 16, 1.943

Henry L. Dowell and George I. Shelton,

Athens, Tex. Application February 26, 1943, Serial No. 471,282

Claims.

This invention relates to a means for extinguishing fires which may have originated in the walls, roof, attic, closets or closed rooms of a building, and it consists in the constructions, arrangements and combinations herein described and claimed.

It is the cardinal object of the invention to provide a means which will permit the discharge of an extinguishing fluid into aclosed structure from the interior thereof without liability of permitting air to enter the structure, thus permitting a more ready control of a fire.

More specifically, it is an object of the invention to provide a discharge nozzle which may be actuated so as to penetrate a wall or the like for discharge of the extinguishing fluid at a point adjacent the wall or at a point substantially removed therefrom, thedischarge of the fluid at such points being simultaneous or independent as required.

It is also an object of the invention to provide a novel connecting means between the nozzle proper and a discharge hose or the like.

Additional objects, advantages and features of invention will be apparent from the following Figure 1 is a side elevation of the nozzle illustrating the device in use, fFigure 2 is an enlarged vertical section there- Figure 3 is a similar view partly in elevation, on the line 3-3 of Figure 2.

Figure 4 is a fragmentary vertical section illustrating the position of the parts for lateral discharge of fluid,

Figure 5 is a cross section on the line 5-5 of Figure 1 illustrating the locked position of a coupling device,

Figure 6 is a similar view'illustrating the unlocked position of the coupling device,

Figure 7 is a cross section on the line. l-! of Figure 2,

Figure 8 is a cross section on the line 8-8 of Figure 2,

Figure 9 is a cross section on the line 99 of Figure 4,

Figure 10 is a cross sectionon the line Ill-I0 of Figure 2,

Figure 11 is an enlarged vertical section, partly in section, illustrating the valve actuating means,

Figure 12 is a cross section on the line l2-|2 of Figure 11,

Figure 13 is a section through the eccentric employed in the device,

description and accompanying drawings, wherein Figure 14 is an elevation, partly in section, of the operating rod of the actuating means,

Figure 15 is a cross section on the line of Figure 11,

Figure 16 is a vertical section on the line I 6-4 6 of Figure 11,

Figure 17 is a perspective view of the eccentric.

There is illustrated'a discharge nozzle generally indicated by the reference character i0 which consists of a fluid inlet H and discharge bit or drill l2 interconnected by suitable fittings, as will be described.

A four-way T-fitting I3 is employed, the lateral extensions M of which receive tubular members i5 which function as handles for actuating the drill or bit i2, as will be explained in greater detail hereinafter. The vertically disposed extensions I6 and ll of the fitting have secured respectively therein, a conduit I8 and a coupling fitting 19. The conduit is is threaded exteriorly at its lower end and receives a threaded sleeve 20 thereon, the sleeve 20 functioning to mount the drill or bit l2. In the fully engaged position of the drill I2, the latter will abut the lower end of the conduit l8 as shown in Figures 2, 3 and 4.

At a point above the lower end of the conduit 18 an arcuate slot 2| is formed for a purpose to be explained.

A sleeve 22 is rotatably mounted upon the conduit [8 of alength to extend between a shoulder 23 of the extension l6 and the upper end of the sleeve 20. Suitable gaskets 24 are interposed bethe sleeve 22 may be rotated with respect to the conduit l8 and thereby increase or decrease the discharge opening of the slot 2|.

shank 26 of which is exteriorly threaded for snug engagement in the sleeve 20. A plurality of bores 21 extend through the shank and open upon the conical face of the bit and as shown occupy a position in the longitudinal axis of the bit. Additional bores 21 are formed in the body of the shank which are positioned outwardly of the bores 21 and open upon an annular groove 28 formed at the base of the drill head.

Reciprocable within the conduit there is a control valve 29 in the present instance consistin of an elongated body 30 through which a bore 3| is formed for passage of fluid to the bit as will be described. The body portion 30 will includesuitable packing means 32 effecting a snug The drill or bit 12 is of conical formation, the

fit within the conduit I8, and as shown includes an inturned flange 32', of a width extending slightly beyond the bore 3|, defining a reduced port 32a. Screw threaded fastenings secure the packing to the body 30, as shown, in Figures 2 and 4.- The upper end of the bore 3| is threaded and receives therein an operating member 33. The operating member 33 is in the form of a tube slotted longitudinally as at 34 for passage of fluid through the valve 29. The upper end ofv the member-33 is provided with a pair of spaced ears 35 between which a pull lever 36 is pivotally mounted. The upper end of the lever 36 is pivotally mounted upon an eccentric 31 associated with an operating rod, the latter being suitably mounted in the fitting I3, and disposed exteriorly thereof for ready manipulation of the valve 29, as will now be described.

Attention is invited particularly to Figures 11 to 1'1 for an understanding of the operating means for the valve 29, wherein it will be seen thatone of the handle members I5 house the essential parts of such means. The handle I5 is threadedly engaged in one of the lateral ex-- tensions I4, the outer end of which is of reduced diameter, as indicated at I5, and rotatably mounted thereon is a sleeve H5. The sleeve-H5 includes an end wall H6 in which a square opening H1 is formed which receives a square tenon of a rod H8. The tenon has a threaded axial aperture H9 for reception of a machine screw I29 which secures the sleeve II5 to the rod. The opposite end of the rod IIB is also formed with a square tenon I2I and threaded bore I22 for mounting of the eccentric 31. The eccentric 3? is formed from a rectangular block of metal, one end of which is formed with a recess I23 complemental to the tenon I2I of the rod. An aperture I24 is formed in the block adapted to align with the aperture I22 of the rod. A machine screw I25 extended through the aperture I24 and engaged in the threaded bore I22 secures the ec-- centric 31 to the rod I I8. The opposit end of the eccentric 31 is formed with a threaded aperture I26 and receives a pintle I31, the outer end of which is enlarged as at I38 and providedwith a head I39. The enlarged portion of the pintle forms a bearing for the pull lever as clearly shown in Figure 11.

The rod H8 is supported at its inner end by a combined bearing and gland I40, which in the present-instance comprises a cylindrical body member I4I frictionally fit or otherwise secured in the handle member I5. The member I4I has an axial bore through which the rod H8 is extended, and an annular-recess interiorly threaded as at I42. The rod H8 has an integral annular enlargement I43 adapted to abut a compression washer I44 interposed therebetween and the base of the gland I40. A gland nut I45 complemental to the threads I42 of the gland is employed to effect a liquid-tight seal, yet permit rotation of the rod II8, by turning movements exerted upon the sleeve H5.

The drill I2 is provided with flutes I2 forming cutting edges, the latter being slightly twisted as indicated at I2" to effect ready penetration of a roof, wall or the like. 4

The coupling I9 is formed with a seat 39 adapted to rotatably receive a fitting 49. The fitting 40 is held to the seat 39 by means of a packing nut 4I threadedly engaged in the upper end of the fitting I9. It should be understood that the connection described will permit rotary movements of the discharg nozzle proper.

An elbow fitting 42 is illustrated as connected to the fitting 40 which in turn mounts a coupling device 43 for establishing connection with a fluid nozzle 44.

For an understanding of the construction of the coupling device, attention is particularly invited to Figures 2, 5 and 6. A nipple 45 is employed, cylindrical in shape, one end of which is threaded for engagement with the elbow fitting Rotatably mounted upon the nipple ther is a body member 46 of substantial thickness, and within the body member, at diametrically opposite sides there are formed arcuate, tapering passageways 47, the passageways tapering in opposite l5 directions; The nipple 45 is provided with diametrically opposite openings 48 in which respective pins 49 are slidably mounted. The pins 49 have a head 59 and between the heads and a seat formed around the openings 49 respective 2o springs 5i are interposed tending to draw the pins-from the openings. The head of the pins traverse the slots under rotation of the body member 49 and in clockwise rotation of the body member the reduced portion of the slots 41 will 25 contact the heads, forcing the pins inwardly 30 to the hose nozzle 44.

through the. openings 48, downwardly behind a flange 52 of the nozzle 44 drawing the flange into snug engagement with a gasket 53 of the nipple 45. The device will thus be effectively coupled Counter-clockwise rotation of the body member 46 will bring the greater depth of the slots into operative position with the heads of the pins, allowing the springs 5| to function and withdraw the pins from engage- 35 ment with the flange 52, and thus allow the nozzle 44 to be disconnected from the device. A closure plate 49' is employed to house the pins and springs and prevent ingress of foreign matter which might affect proper operation of the cou- 0 pling device.

The operation of the device will be radily un derstood from the following description. The nozzle I9 being operatively connected with a firehose nozzle 44 and it is desired to discharge a fire extinguishing fluid below the roof surface of a building, the drill or bit i2 is positioned at a desired point of the roof and by applying pressure and a rotary movement of the bit, which may be readily accomplished through the handles I5, the edges I2 will effect a cutting action, forming an opening in the roof admitting the nozzle therebelow. It will be understood that the bit I2 forms an opening only sufficient to admit the 55 nozzle therethrough, with slight allowance for 1y through the conduit and bore 3I of the valve easy withdrawal, so that only very little air is admitted within the burning structure. The fluid is now admitted, the valve 29 being in the position shown in Figure 2, the fluid will pass downward- I8, through the slots 34 and thence through ports 21 and 21. The ports 21 will provide a direct forward discharge of fluid while the ports 21' assisted by the annular groove 28 will discharge the fluid in an annular lateral direction. Should it be found necessary to discharge the fluid at a point laterally directly beneath the underside of the roof, the sleeve H5 is rotated so as to move the valve 29 to close the ports 21 and 21'. In

this position of the valve 29 the slots 2| and 25 T-fltting I3.

are uncovered and permit discharge of the fluid.

The sleeve 22 may be rotated to vary the opening of the slot 25 and the position of the slot may be indicated at 54 by suitable markings upon the It is possible to move the valve 29 to an intermediate position so that fluid may be discharged simultaneously through the ports 21-21 and the slots 2| and 25.

. While we have shown and specifically described our construction, this is byway of illustration a conduit, a hollow fitting secured to one endthereof and a cutting bit fixed to the other end thereof, said fitting being swivelly connected to a source of fiuid supply, said cutting bit having a plurality of ports formed therethrough for discharge of fluid from the conduit, the conduit having a slot inwardly of the cutting bit, a valve within the conduit complemental to the ports and the slot for control of fiuid therethrough, and control means on said conduit and operatively connected to said valve for operating the same.

2. A nozzle for use in extinguishing a fire from the exterior of a building structure comprising a cylindrical conduit, a hollow fitting fixed to one end of the conduit, a cutting bit secured to the other end thereof, said fitting being swivelly connected to a source of fluid supply. said cutting bit having a plurality of ports extending longitudinally therethrough forming communication with the conduit, the conduit having a slot positioned inwardly of the bit, a sleeve rotatable on the conduit and having a slot aligned with the first-named slot, and a valve in the conduit selectively movable to control passage of fluid through the ports and the slots.

3. A-nozzle for use in extinguishing a fire from the exterior oi a building structure comprising a cylindrical conduit, a hollow fitting fixed to one end or the conduit, a cutting bit secured to the other end thereof, said fitting being swivelly connected to a source of fluid supply. said cutting bit having a plurality of ports extending longitudinally therethrough forming communication with the conduit, the conduit having a slot positioned inwardly of the bit, a sleeve rotatable on the conduit and having a slot aligned with the first named slot, a cylindrical ported valve reciprocable 111- said conduit and movable to control passage of fluid through'said slots and'sald ports, and means exteriorly of the conduit for reciprocating the valve. 3

4. A nozzle for use in extinguishing a fire from the exterior of a building structure comprising acylindrical conduit, a hollow fitting fixed to one end of the conduit, a cone-shaped cutting bit secured to the other end thereof, said fitting being swivelly connected to a source of fluid supply and having hand grips whereby to rotate the conduit and associated bit, said bit having a plurality of ports extending longitudinally therethrough forming communication with the conduit, certain of the ports opening upon a groove formed adjacent the base of the bit for lateral discharge of fiuid, the conduit having a slot positioned inwardly of the bit, a sleeve rotatable on the conduit and having a slot aligned with the first named slot, 5, cyindrical ported valve reciprocable in said conduit and movable to control passage of fiuid through said slots and said ports and means exteriorly or the conduit for reciprocating the valve.

5. The structure of claim 4 in which the means for reciprocating the valve consists of a shaft rotatably mounted in one of the hand grips, an eccentric on the inner end of the shaft within the hollow fitting, a link member pivotally connected between the eccentric and the valve and a sleeve rotatably' mounted on the hand grip and connected with the shaft.

' HENRY L. DOWEIL.

GEORGE I. SHELTON. 

